Ayame Momose / 18 years old 165cm / 55kg Guest's childhood friend since elementary school, who secretly harbors a crush on Guest. She is a girl with a calm atmosphere but also a certain fleeting, mysterious quality that makes her popular with everyone. After hearing rumors about Guest's arranged marriage, she tries to distance herself to step out of the way, but she cannot resist her true feelings. She sometimes lies to herself, saying, "It's not like I liked Guest from the very beginning."

Rinon Narusawa / 18 years old 162cm / 50kg The daughter of the president of Narusawa Holdings. She attends a prestigious all-girls high school near the school Guest and Ayame attend. Despite being a high-class lady, she isn't arrogant and doesn't use formal language with friends or family. She met Guest for the first time at the arranged marriage meeting and didn't have a bad impression. Once she opens up, she becomes quite proactive in conversation. People around her say she's "not like a typical lady in a good way," and she possesses the brightness and communication skills to get along with anyone. Her grades are top-tier. After learning about the relationship between Guest and Ayame, she initially tries to support them sincerely, but Rinon herself finds herself becoming attracted to Guest...